Xiaosaurus: Research Database Ornithischia (Dinosauria) · Middle–Late Jurassic (~170–160 MYA) · Asia — China (Shaximiao Formation) Research Note: Xiaosaurus dashenpuensis was a small ornithischian dinosaur from the Middle–Late Jurassic Shaximiao Formation of Sichuan, China. As a basal ornithischian, it provides data on early dinosaur diversity in Middle Jurassic Asia. Research Finding Status Grade … Read more
In Depth Tatankacephalus is a genus of nodosaur that lived in what is now Montana during the early Cretaceous period. Best known from an incomplete skull, Tatankacephalus has been interpreted as a close relative to the better known nodosaurid dinosaur Gastonia. A different genus of nodosaurid dinosaur from the same location as Tatankacephalus is Sauropelta, … Read more
Caenagnathasia: Research Database Caenagnathidae (Oviraptorosauria: Theropoda) · Late Cretaceous (~70 MYA) · Asia — Uzbekistan (Bissekty Formation) Research Note: Caenagnathasia martinsoni was one of the smallest known oviraptorosaurians and the earliest known caenagnathid, from the Late Cretaceous Bissekty Formation of Uzbekistan. Its name means “recent jaw from Asia”. Research Finding Status Grade Year … Read more
In Depth Chuanjiesaurus is a genus of sauropod dinosaur that lived in China around the mid Jurassic period. Chuanjiesaurus seems to be similar to the genus Mamenchisaurus, something which has led to Chuanjiesaurus sometimes identified as a mamenchisaurid sauropod. Further Reading - [Lower, Middle, and Upper Jurassic divisions of the Lufeng region of Yunnan province]. … Read more
Nasutoceratops: Research Database Ceratopsidae (Ornithischia) · Late Cretaceous (~76-75 MYA) · North America — Utah (Kaiparowits Formation) Research Note: Nasutoceratops was a centrosaurine ceratopsid from the Late Cretaceous of Utah — the first known centrosaurine ceratopsid from southern Laramidia. As a member of the Ceratopsidae, it provides data on ceratopsid diversity and biogeography in … Read more
Jeyawati: Research Database Hadrosauroidea (Ornithischia) · Late Cretaceous (~99–94 MYA) · North America — USA (Morrison Formation, Utah) Research Note: Jeyawati was a basal hadrosauroid ornithischian from the Late Cretaceous of Utah, USA. As a member of the lineage leading to true hadrosaurids, it provides important data on the evolutionary transition from basal ornithopods … Read more
Chungkingosaurus: Research Database Stegosauria (Ornithischia) · Late Jurassic (~160–155 MYA) · Asia — China (Sichuan, Shaximiao Formation) Research Note: Chungkingosaurus was a stegosaur from the Late Jurassic Shaximiao Formation of Sichuan, China. As one of the smallest known stegosaurs and one of several stegosaur species from the Jurassic of China, it provides important data … Read more
Penelopognathus: Research Database Ornithischia (Dinosauria) · Late Cretaceous (~70 MYA) ·> Asia — Mongolia (Gobi Desert) Research Note: Penelopognathus was an ornithischian dinosaur from the Late Cretaceous of Mongolia. As a member of the dinosaur fauna of the Late Cretaceous of Asia, it provides important data on ornithischian diversity and evolution in this region. … Read more
Brachylophosaurus: Research Database Hadrosauridae (Ornithischia) · Late Cretaceous (~80-77 MYA) · North America — USA, Montana (Judith River Formation) Research Note: Brachylophosaurus was a hadrosaurid ornithischian from the Late Cretaceous of Montana — known from exceptionally preserved specimens including soft tissue and had one of the most distinctive hadrosaurid crests. As a member of … Read more
Troodon: Research Database Troodontidae (Theropoda) · Late Cretaceous (~77–66 MYA) · North America — USA, Canada Research Note: Troodon is one of the most celebrated dinosaurs from the Late Cretaceous of North America, known from beautifully preserved specimens featuring serrated, blade-like teeth that first suggested a carnivorous or omnivorous diet. Its large eyes and … Read more